Allied-telesis AT-PBC18 Manual de usuario descargar pdf (Pagina 71)

PowerBlade PBC18 Installation Guide

Link Test

Back-to-back/

Standalone

Button

The Link Test Back-to-back/Standalone (LT BB/LT SA) button on the

AT-PB1000 Series Media Converters is used together with the Link

Test/MissingLink feature when performing a link test on the media

converter. You use the LT BB/LT SA button to configure the module to

match the topology in which you installed the module. The two possible

network topologies for the media converter, back-to-back and

standalone, are described in Network Topologies on page 49. The LT

BB/LT SA button must be set correctly in order for a link test to be

performed accurately. To perform a link test, refer to Troubleshooting on

page 99.

Caution

AT-PB1000 Series Media Converters will not pass network traffic

when a link test is being performed, thus possibly disrupting

network operation. Only when the LT/ML button or switch is in the

ML position will the media converter pass network traffic.

Cable

Specifications

Table 25 lists the cabling specifications for the AT-PB1000 Series Media

Converters.

Table 25 Fiber Optic Port Cabling Specifications

Model Cable Maximum Distance

1000Base-SX Port

All Models 62.5/125 µm multimode fiber 275 m (902 ft)

50/125 µm multimode fiber 550 m (1,804 ft)

1000Base-LX Port

AT-PB1001/1 62.5/12 5 µm multimode fiber 550 m (1,804 ft)

50/12 5 µm multimode fiber 550 m (1,804 ft)

10/125 µm single-mode fiber 10 km (6.2 mi)

AT-PB1001/2 10/125 µm single-mode fiber 25 km (15.5 mi)

AT-PB1001/3 10/125 µm single-mode fiber 40 km (24.8 mi)

1. For maximum performance of Gigabit Optical Datalinks when greater than 40 km (24.8 mi) and operating within the 1550 nm

optical spectrum, it is mandatory that the Single Mode Fiber (SMF) be rated as “non-dispersion-shifted,” “dispersion shifted,”

or “non-zero dispersion shifted.”

AT-PB1001/4 10/125 µm single-mode fiber 70 km (43.4 mi)

1 2 ... 66 67 68 69 70 71 72 73 74 75 76 ... 119 120

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